Also, make sure the publisher realizes you are familiar with their house and sees that your book will fit into one of their book lines. This letter should be only one typewritten page if possible. The problem with most cover letters (and with most book proposals in general) is that they are too long and cumbersome.

I use the term cover letter and query letter interchangeably, because your cover letter should be a strong as your query letter. If your proposal makes it to committee, and I’ll talk about that later, most of the committee members will only read your cover letter. It’s quality can make or break a contract!